Journal-box for stamp-mills.



Patented july Il, |899.

T. W. CAPEN.

JOURNAL BOX FUR STAMP MILLS.

`(No Mudei.)

v UNITED A STATES PATENT OFFICE,

TIIOMAS XV. CAPEN, OF CHICAGO, ILLIOIS, ASSIGNOR TO THE GATES IRON WORKS, OF ILLINOIS.

JOURNAL-BOX FOR STAM P-IVIILLS...

SPECIFICATION forming part of LettersPatent No. 628,447', dated July 11, 1899. Application filed April '7, 1899. Serial No. `712,091. (No model.)

To @ZZ whom it may concern:

Be it known that I, THOMAS W. CAPEN, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Journal-Boxes for Stamp` Mills, of which the followingis a speciiication.

My invention relates particularly to that class of stamp-mills in which there are two or ro more posts adapted to sustain a cam-shaft in position, which cam-shaft is supplied with a number of cams adapted to raise stamps which are allowed to drop successively and pulverize material between a head on their lower portions and a mortar-bed.

The invention has more particular relation to the construction of the box in which acamshaft has its bearings, all of which will more.

fully hereinafter appear.

The principal object of my invention is to provide a stamp-mill with a simple, economical, and efficient box for supporting the camshaft; and the invention consists in the features, combinations, and details of construc` 2 5 tion hereinafter described and claimed.

In the accompanying drawings, Figure lis a perspective view of a cam-shaft box constructed in accordance with my improvements; and Fig. 2, avertical sectional elevation taken on line 2 of Fig. l, looking in the direction of the arrow and showing the box as it appears when attached in position.

In the art to which Vthis invention relates it is well known that the weight of the cam- 3'5 shaft of a stamp-mill rests entirely on the lower portion of the cam-shaft box, for the reason that the work performed by the camshaft is to lift the stamp-rods only. As there are a large number of successive shocks ap- 4o plied to the machine, in that the act of raising the stamp-rods is intermittent, the camshaft is necessarily subjected toa large number of violent blows. Consequently it is important that the cam-shaft box be sustained immovably in position. In order to accomplish this result, it is desirable that the standards or posts which sustain the boxes should be cut away to form a seat to receive the box. As a consequence of this cutting away it is 5o difficult to get at the box-cap, which is nothing more or less than a dust-guard,for the purpose of removing or inserting it. Hence the use of bolt-and-nut mechanism is undesirable.

My invention therefore is intended, primarily, to provide a simple, economical, and efiicient box for a stamp-mill with a removable cap and means for holding it rigidly in position and at the same time permitting it to be removed whenever desirable or necessary, as will hereinafter more fully be shown. 6o

In illustrating and describing my invention `I have only illustrated and described so much ofthe mechanism 'as is old, taken in connection with what I consider to be new, as will properly disclose the invention and enable those skilled in the art to practice the same, leaving out of consideration other and wellknown mechanisms, which if illustrated and described here would only tend to prolixity, confusion, and ambiguity. 7o

In constructing my improvement I use the usual standard or post A, which forms a' portion of the supporting-frame of a stampmill, and cut it away, so as to form the seat d. Resting upon the seat in this post is the box proper, comprising a lower portion B, which is babbitted at h to form the bearing for the cam-shaft journal. This box, as will appear from an inspection of the drawings, has a base portion b/ made in the shape of 8o an angle-plate, upon which the bearing is secured by a very light web-frame b2. The box is also provided with an upwardly-extending portion or flange B', provided with bolt-holes b5, through which securing-bolts C are passed. Securing-bolts C are also passed through `boltholes b4 in the angle-plate, as shown in the drawings.

In order to hold a dust-cap D in engagement with the box proper, the cap is provided 9o with twol lugs d and d at or near its inner lateral edge and arranged to provide a space Z2 between the same. The upwardly-extending flange of the box is provided with a lug b5, arranged, when the cap is in position, to be directly over the space between the lugs on such cap. The cap is valso provided with a projectin glug (Fon its opposite lateral edge, which in turn has a pin d* extending down into an opening in the box. (See Fig. 2.) A roo wedge E is provided and driven between the two lugs on the inner lateral edge of the cap Le A @8,447

and the lug on the upwardly-extendin g flange of the box, which rigidly secures the cap in position, while the pin or stud d4 prevents its displacementlongitudinally. Thecapisprovided with the usual oil-cup d5,and the lower part of the box is provided with a trough G,

` in which the waste oil is caught and from which it may be drawn off by means of the waste-pipe g.

In operation the cap is placed in position with its stud in the hole of the box and the wedge driven into place, which rigidly holds the cap in position. When for any reason it is desirable to remove the cap, the wedge is driven out and the cap raised, so that .the outwardly-extending lug on the upwardlyextending flange passes through the space d2, when its cap may be pulled out laterally.

From the foregoing description'of construction and operation it will be seen that the use 'of bolts and' nuts, so far as the dust-cap is concerned, is dispensed with and that the dust-cap can be inserted in ,position or removed therefrom without the use of wrenches or similar tools, which would be very awkward to handle in the recess of the standard.

I claiml'. In mechanisms of the class described, a

. box provided with an upwardlyextending ange and a semicylindrical bearing, a dustcap provided with at least two lugs on its inner lateral edge, a lug on the upwardly-extending fiange of the lower portion of the box-l arranged above and between the lugs on the cap, and a wedge arranged to be driven between the lugs on the cap and on the box portion'proper to hold the parts together, substantially as described.

2. In mechanisms of the class described, a cam-shaft box provided with a lower portion having a right-angular base an upwardly-ex- -tendin g flan ge and a semicylindrical hearin g,

a cap portion provided with two lugs on its inner lateral edge adjacent to the upwardlyextending flange of the box,va lug on the upwardly-extending flange of the box arranged above and between the lugs on the cap, and a wedge adapted to be passed between the lugs on the c'ap and box to hold the parts in position, substantially as described. v

3. In mechanisms of the class described, a cam-shaft box provided with a lower base portion having a semicylindrical bearing thereon and an upwardly-extending flange, a semicylindrical lcap portion provided with two lugs on its inner lateral edge and a projecting stud on its outer lateral edge adapted to enter a recess or opening in thel lower portion of the box, a lug on the upwardly-extending flange of the box proper arranged above and between the lugs on the inner edge of the cap, and a wedge adapted to be passed between the lugs on the box and on the cap to secure the parts together, substantially as described.

4. In mechanisms of the class described, a cam-shaft box comprising a lower right-angular base provided with an oil-trough a seni icylindrical bearin g portion supported thereon and anupwardly-extending fia/nge portion, a semicylindrical cap portion provided with two lugs on its inner lateral edge, a lug and stud `on its' outer lateral edge adapted to enter a recess or opening in the outer lateral edge of the box proper, a lu g on the upwardly-extending flange of the box proper arranged above and between the lugs on thecap, and a wedge arranged to be driven between the lugs on the box and cap to secure them together, substantially as described.

THOMAS NV. CAPEN.

lVitnesses:

E. E. HANNA, A. J. GATES. 

